【摘要】 获取了研究海域工程实施前和实施后3个月的扫海地形图,并分析堵坝工程实施后短期的冲淤变化,在此资料的基础上采用二维的潮流泥沙数学模型和悬沙沉降方程计算冲淤量。模型中引入了参数β对悬沙沉降方程进行了简化并求解,计算结果较好地拟合了实测的短期冲淤变化量及趋势。研究结果表明,模型的参数选取是合适的,预测模型能一定程度上反应真实的冲淤变化。最后采用模型计算预测工程后长期的冲淤变化。更多还原

【Abstract】 A two-dimensional numerical model was adopted to calculate the siltation caused by a blocking dam in a tidal current channel.A parameter β was introduced into the model to simplify the solution of sediment silting equation.The calculation is based on the submarine topography maps measured before and after the blocking dam construction.The model was verified with the test data measured on the tidal channel and the results of short-term modeling agree well with the measurements.Long-term prediction of siltation showed that the established model with well-defined parameters is able to describe the topographic changes of siltation under tidal current condition.更多还原